Scrap compacting machine

Abstract

A scrap compacting machine comprising a compacting channel in which a parallelepiped block of pressed scrap advances, a blade located at a downstream end of the channel, a portal structure having a vertical lie which is located above the end of the channel, in which a beam slides, which beam bears a blade complementary to the blade located at the end of the channel, at least a main activating hydraulic piston-cylinder group located between an architrave of the portal structure and the beam and in an adjacent position to each upright of the portal, at least an activating auxiliary hydraulic piston-cylinder group located between the respective upright and the respective end of the beam, said auxiliary piston-cylinder groups being activated by the same power hydraulic group that activates the at least a main hydraulic piston-cylinder group, and the overall active section of the auxiliary piston-cylinder groups being a fraction of the overall active section of the at least a main hydraulic piston-cylinder group.

1 . A scrap compacting machine comprising a compacting channel ( 1 ) in which a parallelepiped block ( 2 ) of pressed scrap advances, a blade ( 3 ) located at a downstream end of the channel ( 1 ), a portal structure ( 4 ) having a vertical lie which is located above the end of the channel, in which a beam ( 5 ) slides, which beam ( 5 ) bears a blade ( 50 ) complementary to the blade ( 3 ) located at the end of the channel ( 1 ), at least a main activating hydraulic piston-cylinder group ( 6 ) located between an architrave ( 42 ) of the portal structure and the beam ( 5 ), characterised in that it comprises, in an adjacent position to each upright ( 41 ) of the portal, at least an activating auxiliary hydraulic piston-cylinder group ( 7 ) located between the respective upright and the respective end of the beam, said auxiliary piston-cylinder groups ( 7 ) being activated by the same power hydraulic group that activates the at least a main hydraulic piston-cylinder group ( 6 ), and the overall active section of the auxiliary piston-cylinder groups ( 7 ) being a fraction of the overall active section of the at least a main hydraulic piston-cylinder group ( 6 ). 
     
     
         2 . The machine of  claim 1 , characterised in that two main hydraulic piston-cylinder groups ( 6 ) are located between the architrave ( 42 ) of the portal structure ( 4 ) and the beam ( 5 ). 
     
     
         3 . The machine of  claim 1 , characterised in that the auxiliary piston-cylinder groups ( 7 ) exhibit the body ( 71 ) thereof connected to the beam bearing the blade and the stem ( 72 ) fixed to the upright of the portal structure. 
     
     
         4 . The machine of  claim 1 , characterised in that the overall active section of the main piston-cylinder groups is greater than the overall active section of the auxiliary piston-cylinder groups.